Combination wireless-telegraphy instrument.



J. E. OSTRANDER. COMBINATION WIRELESS TELEGRAPHY INSTRUMENT.

`PPLIOATION FILED SEPT. 5,1907.

Patented Mar. 30, 1909.

2 SHEETS-SHEET 1.

A TTOHNE /S J. E. OSTRANDER. COMBINATION WIRELESS TELEGRAPHY INSTRUMENT. APPLIOATIUN FILED SEPT. 6,1907.

91 6,483. l Patented Mar. 30, 1909.

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i jf E if 17 W/TNESSES INVENTO/[r` ATTORNEYS itself thrown out of operation and the circuit which depen s upon the length of time the l. length of time the instrument continues to and Improved Combination Wireless-Teleg- -mentary closing at the transmission station length of time, the circuit at the receiving f ,station will be repeatedly opened and closed.

JOHN E. OSTRANDER, OF STAATSBURG, NEW YORK.

COMBINATION WIRELESS-TELIEGRAPH 11r INSTRUMENT.

Specification of Letters Patent.

Patented March so, 190e.

Application filed September 5, 1907. Serial No. 391,461.

To all whom 'it may concern:

v Be it known that I, JOHN E. OSTR'ANDER, a citizen of the UnitedStates, and a resident of Staatsburg, in the county of Dutchess and State of N ewYork, have invented a new raplhy Instrument, of which the following is a l clean and exact description.

` This invention relates to certain improvements in instruments used in wireless telegraphy, and`moreparticularly to an improved co erer and mechanism for breaking the `circuit therethrough. In my improved instrument the passage of the current throughthe coherer not only operates the sounder but also controls mechanism, operating to completely break all circuits passing through the coherer. By this mechanicalbreaking of the circuit through the coherer, the mechanism which serves to break the circuit'is through the coherer 1s again closed as far as the mechanical part is concerned. If Hertzian waves are still lpassing through the coherer, 'the circuit wil immediately become roken again, and this repeated making and breaking of the circuit causes -a rapid succession of v-ta s or a buzzing, the length of transmitter is operated. VThis'circuit breaker 1s also so arranged that it ta s or jars the coherer directly and thus ecolieres the small particles or granules contained therein. In the preferred form of my instrument, the sounder is provided with an operatin lever or member which upon the passage o a current through the coherer and the sounder, o rates to ta -the coherer and also to lift t e same bod' yand break the circuit therethrougllli.-

In t e employment of the instrument the buzz or operate in rapidlysuccessive clicks eld c losed at the transmitting station. For sending messages by the Morse lcod-e or anycode-contammg dots and dashes, a mo- Will cause a single tap and a single breaking of the circuit at the receiving station and constitutin a dot, but if the transmitting key be he d down for a very appreciable Thus, dots anddashes maybe readily differentiated and messages sent with great breaking of the circuit through the coherer to represent a dash would be far more rapid than the operator at the transmitting station rapidity, as the automatic making andv could open and close the transmitting key 1 to gime a series of dots. In reading the messages from the receivingstatlon, a single tap ofthe sounder and the resulting breaking vof the current through the coherer and the rapid tapping and rapid breaking of the circult wil constitute the dot and dash, respective] f. The sudden tapping and moving of the collerer bodily serves to effect the disrupting or decohermg action far more efficiently than is possible by a mere tapping of the coherer or its su port.

Reference is to be had to the accompanyingdrawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures, and in which- Figure' 1\.is a side elevation of a combined sounder and 'coherer constructed to incorporate my invention; Fig. 2 lisa top plan view thereof, a' portion being shown 1n section on the line 2-2 of Fig. 1; Fig. 3 is a vertical section through the coherer and its support; and Fig. 4 is a diagrammatic view illustrating the wiring of the several circuits. In the specific form illustrated, I provide a base 10-having the coherer and the sounder mounted thereon, and the sounder provided with a movable member extending to a point adjacent the coherer and serving to positively and suddenly lift the latter and reak the circuit therethrough upon the effect of the local circuit passing through the coils of the sounder. Any suitable electrically-operated-` device may be employed to effect the decoherin action and adapted to be controlled y the passage of the current through the coherer, but preferably the sounder constitutes this electrically-operated device.

The coherer pro er comprises a glass tube 11 having its en s closed in an suitable manner to retain the filings 12. y nengagement with'V the mass of filin s at the opposite f ends thereof are two metal ic latesl 13 supported upon the inner ends o terminals 14 which extend beyond the ends of the tube and serve asl rests or arms for the coherer and contacts with osts 15. Y These posts 15 are situated at eac end of the coherer and are provided with recesses at their upper end for the reception of the terminals 14, -and have lbinding screws connected thereto,

. wherebyI the posts serve as binding posts `to which -the wlres may bev connected. The base may, if desired,i be provided wit]f1 -a separatepair of binding -jpostsl' connected y the aerial and ground YWires. The tube prefl sion lever upward. For limiting Athe upward l upon vthe descent of, the armature lever ensuring-itsreturn into `engagement with the provide two brac to the support and havin adjustable threaded -stops- 33- extending ownwardly toward *theseats ofthe post 15.v Preferably, each .of

pins prevent any movcment'ov the co erer. otherthan in the directlon of the lengths'of vsaid pins, and the extent of this movement is -pin 34, one end of each sprmg ycoming in con- 21 adjacent the "ends of `thecoil magnets.

` lever carries a -lever pin-24, andthe pin and vhavin v a screw stop 27 adapted to engage raise lthe opposite end of the same to strike to the two posts 15, respectively, 'to facilitate the connecting ofthe local battery wires and erably; has the airx exhausted from `its interior to prevent oxidation of the particles Mounted upon the base 10 and adjacent the opposite end thereof, I provide a sounder having a 'base plate 18 supporting/the coils' 19 of an electroma et and having a standard 16 for pivota y supporting the armature lever 20. The leverextends through between the coils and carries the armature For limiting the movements of the armature lever and normally holding the.'armature out of enga pro i e an adjustment frame 22 supporti ing a screwv 23. The end of the armature.

screw are connected by-a tension spring y25 tending to move the opposite end of the tenmovement, there is provided a standard.26

gages with the lever 28 to lower: one end andV andi lift the-coherer. For limiting the'up'- vward"movement ofthe coherer, and forin seats on the upper ends of. the' posts 15, I ets or standards 32 secured these'threaded stops is providedwith a recess extending up into its lower end, and each of the terminals 14 carries a guide pin 3 4 extending into these recesses. -These uide limited by the distance. between the posts and the threaded stops 33. Preferably a small spiral spring is slipped over each guide tact withv the terminals A14 and the other end with the threaded stops 33, respectively.

. are adopted for the pu ose of e ement with themagnets, .there is Thetension of these springs isvregulated by4 'adjustment 'of wasmand stps sawticn ecting equal contactof-'the .termina s 14 with the recesses inthe posts 1 5; also, to help regulate and'increase the ra 'idity of'action ofthe wholein-v strument. he'sounder Whichthus operates g npt von .l asasounder but asaecoherer-and circuitjv reaker, is alsopreerably constructed to fclose'tlfg-e circuit for arep'e'ater. For accomplishing'zthisp'urpose', I. providebinding posts 35 to whichthe wires from the re eater `may be connected; and one ofv the, binding posts is electricallyonnected to the .standard 16`and therefore-tothe armaturelever 20, while the other post is electrically` con-V nected to they standard29.' The'screw 31 is preferablyand upon t the engagement of the screw' ith'the lever28 causes the repeater circuit l'to be closed.

lan. the operating offmy improved instrui provided withfa contact point,

e descent of the armature lever ment, l connect one'of the bindingposts v15 vto an aeriall wire 36 and the other binding post to a ground wire 37.. These twopbindw posts 17 Whichare connected thereto, arel y111g posts ortheir equivalents',- the binding connected to the opposite terminals from' a local battery 38and Ythe coils 39 of a relay.

The circuit closure of the relay is'connected in circuit by. wires, 40 with a battery 41 and through the binding posts .42 of the coils 19 ofthe sounder.

In .connection with the parts illustrated in Fig. 4, vvarious other appurtenances and a phances, suchas rheostats, inductance co' s, resistances,fand the like, may be employed, but -as the operation of the parts comprising 'my invention is not directly 'dependent thereon, said appliances have been omitted from'the drawings. -With the parts connectedas illustrated in Fig. 4, the sending out of Hertzian Vwaves from the transmitting station -willjcallsev a current through the wiresV 36 and 37 andthe coherer, and this currentfwill so adjust the particles within `the coherer that va' current lfrom a local battery may iow through said coherer and the coils 39 of the relay.- T le closing of the circuit at the relay draws down the armature 21 of the sounder, and as a direct result thereofthe lever 28 is raised and the coherer is liftedbodily od the contactsand the circuit therethrough isbroken. Thesounder and relay. Aimnfiediately becomedeenergized and the coherer returns to its posi'- tion. If a dash. is being 'sent from the transmitting stationl by the holding vdown of the transmission key, the current'will again pass. through the coherer and the o eration Will be repeated., `The making a breaking of the clrcuitv is, of course, very rapid, and the action of the lever 28 Will-become almost continuous in vits decohering and circuit-- breaking operationso longA as the circuit is held closed at the transmitting station. The

ist

number of times the circuit is broken both by the decohering action and by the lifting of the coherer will be determined by the length of time the transmitting key is' he d closed, that is, Whether a 'dash oi' a dot is being transmitted.

Having thus described my invention, I claim as new and desiie to secure by Letters `porting said coherer by said terminals, 'and 'means for intermittently separating one of circuit.

3. In combination, a conerer, comprising a tube containing a mass of granules, terminals extending into said tube and in electrical contact with said mass, meansfor supporting said coherer by said terminals, and means for intermittently separating one of the terminals from its support to break the circuit.

the terminals from its support to break the miiials 4. In combination, an aerial wire, a coherer, comprising a tube containing a mass of granules, terminals extending into said tube and in electrical contact with said mass, means for supporting said coherer by said terminals, and an electrically-operated device provided with a movable member adapted to be operated upon the passage of a current through the coherer and serving to decohere the coherer and also serving to break the' connections between said coheier and said\aerial wire.

5. In combination, a coherer having terextending outwardly--- therefrom, means in engagement with said terminals for normally supporting said coherer, and a de- Vice operated u on the passage ci a current through said -co ierer for lifting the terminals of said coherei out of engagement with their supports and breaking the circuit through said coherer independently of the decohcring action.

ln testimony whereof I have signed my name to this specification in the presence el two subscribing witnesses.

JOHN E. OSTRANDER.

Witnesses:

HARRY ARNoLn, R. H. ARNOLD. 

